Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
optrieden
←
Luxembourgish
op-
(affix)
←
Luxembourgish
trieden
(affix)
→
Luxembourgish
Optrieden
(mention)